R94.31 ABNORMAL ELECTROCARDIOGRAM [ECG] [EKG]

Home > ICD-10 List > Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified > Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94) > Abnormal results of function studies (R94) > R94.31

Code Information

Diagnosis Code: R94.31

Short Description: Abnormal electrocardiogram [ECG] [EKG]

Long Description: Abnormal electrocardiogram [ECG] [EKG]

The code R94.31 is VALID for claim submission

Code Classification:

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
- Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
  - Abnormal results of function studies (R94)
    - R94.31 Abnormal electrocardiogram [ECG] [EKG]

Code Version: 2022 ICD-10-CM

Synonyms

Ambulatory ECG abnormal
Anterior and lateral ST segment elevation
Anterior myocardial infarction on electrocardiogram
Anterior ST segment depression
Anterior ST segment elevation
Anterior T wave inversion
Anterolateral infarction by electrocardiogram
Anteroseptal infarction on electrocardiogram
Atrial hypertrophy by EKG
Atrial hypertrophy by EKG
Atrioventricular conduction pattern - finding
Atrioventricular conduction pattern - finding
Bifid P wave
Bifid T wave
Bifid U wave
Borderline abnormal ECG
Brugada electrocardiograph pattern
Cardiac conduction pattern - finding
Cardiac conduction pattern - finding
Cardiac conduction pattern - finding
Cardiac pacemaker active on electrocardiogram
Clockwise cardiac rotation
Counterclockwise cardiac rotation
Counterclockwise vectorcardiographic loop
Decreased electrocardiogram voltage
Deep S wave
Deep symmetric anterior T wave inversion
Diffuse ST segment depression
Digitalis toxicity by EKG
Diminished LV forces by EKG
Diminished RV forces by EKG
ECG artifact
ECG voltage - finding
ECG voltage - finding
ECG voltage - finding
ECG voltage - finding
ECG: atrial fibrillation
ECG: bradycardia
ECG: ectopic beats
ECG: ectopic beats
ECG: ectopic beats
ECG: ectopic beats
ECG: ectopic beats - premature atrial contraction
ECG: ectopic beats - unifocal premature ventricular contractions
ECG: ectopic beats with multifocal premature ventricular contractions
ECG: extrasystole
ECG: F wave - finding
ECG: F wave absent
ECG: idioventricular rhythm
ECG: junctional rhythm
ECG: junctional tachycardia
ECG: paced rhythm
ECG: paroxysmal ventricular tachycardia
ECG: partial atrioventricular block - 2:1
ECG: partial atrioventricular block - 3:1
ECG: partial atrioventricular block - long PR
ECG: partial sinoatrial block
ECG: premature ventricular contractions
ECG: pulseless electrical activity
ECG: Q-T interval abnormal
ECG: sinus arrhythmia
ECG: sinus bradycardia
ECG: sinus rhythm
ECG: sinus rhythm
ECG: sinus rhythm
ECG: sinus tachycardia
ECG: ST interval abnormal
ECG: U wave exaggerated
ECG: ventricular ectopics
EKG axis perpendicular to frontal plane
EKG hypertrophy
EKG myocardial ischemia
EKG ST segment changes
EKG ventricular tachycardia monomorphic
EKG ventricular tachycardia polymorphic
EKG: accelerated junctional rhythm
EKG: asystole
EKG: atrial ectopics
EKG: atrial flutter
EKG: atrial tachycardia
EKG: focal atrial tachycardia
EKG: heart block
EKG: junctional escape rhythm
EKG: left bundle branch block
EKG: left ventricular strain
EKG: multifocal atrial tachycardia
EKG: myocardial infarction
EKG: myocardial infarction
EKG: myocardial infarction
EKG: myocardial infarction
EKG: myocardial infarction
EKG: myocardial infarction
EKG: myocardial infarction
EKG: myocardial infarction
EKG: P wave abnormal
EKG: P-R interval abnormal
EKG: Q wave abnormal
EKG: QRS complex abnormal
EKG: R wave abnormal
EKG: right bundle branch block
EKG: right bundle branch block
EKG: right ventricle hypertrophy
EKG: S wave abnormal
EKG: supraventricular arrhythmia
EKG: supraventricular tachycardia
EKG: T wave abnormal
EKG: torsades de pointes
EKG: U wave abnormal
EKG: ventricular arrhythmia
EKG: ventricular fibrillation
EKG: ventricular tachycardia
EKG: ventricular tachycardia
EKG: ventricular tachycardia
EKG:left ventricle hypertrophy
EKG:posterior/inferior infarct
Electrical alternation of heart
Electrocardiogram abnormal
Electrocardiogram showing electrical capture following temporary pacing
Electrocardiogram showing paced rhythm with electrical capture
Electrocardiogram: paroxysmal atrial tachycardia
Finding of TU interval
Finding of TU interval
Finding of TU interval
Finding of TU interval
Flat U wave
Flattened P wave
Flattened T wave
Flattened U wave
High T-voltage
Inadequate ECG tracing
Inferior and lateral ST segment elevation
Inferior and right sided ST segment elevation
Inferior myocardial infarction on electrocardiogram
Inferior ST segment depression
Inferior ST segment elevation
Inverted biphasic anterior T wave
Inverted P wave
Inverted T wave
Inverted U wave
Lateral infarction on electrocardiogram
Lateral ST segment elevation
Left atrial hypertrophy by EKG
Left axis deviation
Left axis deviation greater than -90 degrees by EKG
Left ventricular hypertrophy by electrocardiogram
Left ventricular ST changes
Low QRS voltages
Low QRS voltages in the limb leads
Low QRS voltages in the precordial leads
Low U wave
Low ventricular voltage by EKG
Narrow QRS complex
Nonspecific ST-T abnormality on electrocardiogram
P mitrale
P pulmonale
P wave - finding
P wave - finding
P wave - finding
P wave - finding
P wave - finding
P wave - finding
P wave - finding
P wave - finding
P wave - finding
P wave axis - finding
P wave axis - finding
P wave axis - finding
P wave axis superior
P wave left axis deviation
P wave right axis deviation
Paired ventricular premature complexes on electrocardiogram
Pathological Q wave
Posterior myocardial infarction on electrocardiogram
Posterior ST segment depression
Posterior ST segment elevation
PR depression
PR elevation
PR interval - finding
PR interval - finding
PR interval - finding
PR interval - finding
PR interval - finding
PR interval - finding
Prolonged P wave
Prolonged PR interval
Prolonged ST segment
Prolonged T wave
Prolonged TU interval
Prolonged U wave
Provoked Brugada electrocardiograph pattern
Q wave - finding
Q wave - finding
Q wave - finding
Q wave - finding
Q wave height decreased
Q wave height increased
QRS Axis - finding
QRS Axis - finding
QRS Axis - finding
QRS Axis - finding
QRS Axis - finding
QRS complex - finding
QRS complex - finding
QRS complex - finding
QRS complex - finding
QRS complex - finding
QRS complex - finding
QRS complex dropped
QRS complex height decreased
QRS complex height increased
QT interval - finding
QT interval - finding
Quinidine toxicity by EKG
R wave - finding
R wave - finding
R wave - finding
R wave - finding
R wave height decreased
R wave height increased
Reverse tick ST segment
Right atrial hypertrophy by electrocardiogram
Right axis deviation
Right ventricular ST changes
rSr pattern in V1 and V2
S wave - finding
S wave - finding
S wave - finding
S wave - finding
S wave height decreased
S wave height increased
Secondary ST-T abnormality on electrocardiogram
Septal infarction by electrocardiogram
Shortened P wave
Shortened PR interval
Shortened QT interval
Shortened ST interval
Shortened ST segment
Shortened T wave
Shortened TU interval
Shortened U wave
Sloping PR interval
Sloping ST segment
ST segment depression
ST segment elevation
Superior axis
T wave alternans on electrocardiogram
T wave duration - finding
Tall P wave
Tall R wave
Tall T wave
Tall tented T wave
Tall U wave
TU depression
TU elevation
Type A Wolff-Parkinson-White pattern
Type B Wolff-Parkinson-White pattern
Ventricular escape rhythm on electrocardiogram
Ventricular hypertrophy by EKG
Ventricular inversion electrocardiogram pattern
Wide QRS complex

Diagnostic Related Group(s)

The code R94.31 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)

Other Circulatory System Diagnoses With Mcc (314)
Other Circulatory System Diagnoses With Cc (315)
Other Circulatory System Diagnoses Without Cc/mcc (316)

References to Index of Diseases and Injuries

The code R94.31 has the following ICD-10-CM references to the Index of Diseases and Injuries

Type 1 Excludes Notes:
- long QT syndrome (@I45.81*)

Crosswalk Information

ICD-10 Code		ICD-9 Code	ICD-9 Description
R94.31		794.31	Abnorm electrocardiogram

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code	ICD-10 Description
R94	Abnormal results of function studies
R94.0	Abnormal results of function studies of central nervous system
R94.01	Abnormal electroencephalogram [EEG]
R94.02	Abnormal brain scan
R94.09	Abnormal results of other function studies of central nervous system
R94.1	Abnormal results of function studies of peripheral nervous system and special senses
R94.11	Abnormal results of function studies of eye
R94.110	Abnormal electro-oculogram [EOG]
R94.111	Abnormal electroretinogram [ERG]
R94.112	Abnormal visually evoked potential [VEP]
R94.113	Abnormal oculomotor study
R94.118	Abnormal results of other function studies of eye
R94.12	Abnormal results of function studies of ear and other special senses
R94.120	Abnormal auditory function study
R94.121	Abnormal vestibular function study
R94.128	Abnormal results of other function studies of ear and other special senses
R94.13	Abnormal results of function studies of peripheral nervous system
R94.130	Abnormal response to nerve stimulation, unspecified
R94.131	Abnormal electromyogram [EMG]
R94.138	Abnormal results of other function studies of peripheral nervous system
R94.2	Abnormal results of pulmonary function studies
R94.3	Abnormal results of cardiovascular function studies
R94.30	Abnormal result of cardiovascular function study, unspecified
R94.39	Abnormal result of other cardiovascular function study
R94.4	Abnormal results of kidney function studies
R94.5	Abnormal results of liver function studies
R94.6	Abnormal results of thyroid function studies
R94.7	Abnormal results of other endocrine function studies
R94.8	Abnormal results of function studies of other organs and systems

This page was last updated on: 10/1/2023

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